Liquid supply unit and liquid ejection apparatus

Abstract

The liquid supply unit includes: a liquid containing body configured to contain the liquid; a housing that covers the liquid containing body; and a lever-shaped plug member configured to seal the liquid injection portion. The plug member includes: a first pivoting portion that is configured to pivot the plug member; and a first protrusion provided so as to be displaceable in order to lock the plug member onto the housing. The housing includes: a second pivoting portion into which the first pivoting portion is to be fit; and a second protrusion configured to come into contact with the first protrusion and displace the first protrusion when the plug member pivots toward the liquid injection portion, the contact with the first protrusion being canceled and the displacement of the first protrusion being returned to normal when the plug member further pivots and is locked onto the housing.

What is claimed is: 
     
       1. A liquid supply unit configured to supply a liquid to a liquid ejection head of a liquid ejection apparatus, the liquid supply unit comprising:
 a liquid containing body configured to contain the liquid; 
 a liquid injection portion that is provided in the liquid containing body and through which the liquid can be injected into the liquid containing body; 
 a housing that covers the liquid containing body; and 
 a lever-shaped plug member configured to seal the liquid injection portion, 
 wherein the plug member includes:
 a first pivoting portion that is configured to pivot the plug member; and 
 a first protrusion provided so as to be displaceable in order to lock the plug member onto the housing, the first protrusion having a distal end that is oriented towards the first pivoting portion, and 
 
 the housing includes:
 a second pivoting portion into which the first pivoting portion is to be fit; and 
 a second protrusion configured to come into contact with the first protrusion and displace the first protrusion when the plug member pivots toward the liquid injection portion, the contact with the first protrusion being canceled and the displacement of the first protrusion being returned to normal when the plug member further pivots and is locked onto the housing. 
 
 
     
     
       2. The liquid supply unit according to  claim 1 , wherein the first protrusion and the second protrusion are arranged at a position at which the liquid injection portion is sealed by the plug member when the plug member pivots and is locked onto the housing. 
     
     
       3. The liquid supply unit according to  claim 1 , wherein the housing includes a third protrusion configured to, when the plug member pivots away from the liquid injection portion, restrict the pivoting of the plug member and perform locking by coming into contact with an end portion on the first pivoting portion side of the plug member. 
     
     
       4. The liquid supply unit according to  claim 3 , wherein the end portion is provided with a fourth protrusion configured to come into contact with the third protrusion when locked by the third protrusion. 
     
     
       5. The liquid supply unit according to  claim 1 , wherein
 the liquid containing body includes:
 a first positioning portion configured to perform positioning on a mounting axis when mounted in the housing; and 
 a pressed portion to be pressed from one direction on the mounting axis by the housing, 
 
 the housing includes:
 a first housing that covers the liquid containing body from one direction on the mounting axis; 
 a second housing opposing the first housing; 
 a second positioning portion that is provided in the second housing and is configured to lock the first positioning portion; and 
 a pressing portion that is provided in the first housing and is configured to press the pressed portion in the one direction on the mounting axis, and 
 
 in the liquid containing body, when the pressed portion is pressed by the pressing portion, the first positioning portion is locked onto the second positioning portion in conjunction with the pressing. 
 
     
     
       6. A liquid supply unit configured to supply a liquid to a liquid ejection head of a liquid ejection apparatus, the liquid supply unit comprising:
 a liquid containing body configured to contain the liquid; 
 a liquid injection portion that is provided in the liquid containing body and through which the liquid can be injected into the liquid containing body; 
 a housing that covers the liquid containing body; and 
 a lever-shaped plug member configured to seal the liquid injection portion, 
 wherein the plug member includes:
 a first pivoting portion that is configured to pivot the plug member; and 
 a first protrusion that is configured to lock the plug member onto the housing, the first protrusion having a distal end that is oriented towards the first pivoting portion, and 
 
 the housing includes:
 a second pivoting portion into which the first pivoting portion is to be fit; and 
 a second protrusion that is provided so as to be displaceable, and is configured to come into contact with the first protrusion and be displaced when the plug member pivots toward the liquid injection portion, the contact with the protrusion being canceled and the displacement returning to normal when the plug member further pivots and is locked onto the housing. 
 
 
     
     
       7. The liquid supply unit according to  claim 6 , wherein the first protrusion and the second protrusion are arranged at a position at which the liquid injection portion is sealed by the plug member when the plug member pivots and is locked onto the housing. 
     
     
       8. The liquid supply unit according to  claim 6 , wherein the housing includes a third protrusion configured to, when the plug member pivots away from the liquid injection portion, restrict the pivoting of the plug member and perform locking by coming into contact with an end portion on the first pivoting portion side of the plug member. 
     
     
       9. The liquid supply unit according to  claim 8 , wherein the end portion is provided with a fourth protrusion configured to come into contact with the third protrusion when locked by the third protrusion. 
     
     
       10. The liquid supply unit according to  claim 6 , wherein
 the liquid containing body includes:
 a first positioning portion configured to perform positioning on a mounting axis when mounted in the housing; and 
 a pressed portion to be pressed from one direction on the mounting axis by the housing, 
 
 the housing includes:
 a first housing that covers the liquid containing body from one direction on the mounting axis; 
 a second housing opposing the first housing; 
 a second positioning portion that is provided in the second housing and is configured to lock the first positioning portion; and 
 a pressing portion that is provided in the first housing and is configured to press the pressed portion in the one direction on the mounting axis, and 
 
 in the liquid containing body, when the pressed portion is pressed by the pressing portion, the first positioning portion is locked onto the second positioning portion in conjunction with the pressing. 
 
     
     
       11. A liquid supply unit configured to supply a liquid to a liquid ejection head of a liquid ejection apparatus, the liquid supply unit comprising:
 a liquid containing body configured to contain the liquid; 
 a liquid injection portion that is provided in the liquid containing body and through which the liquid can be injected into the liquid containing body; and 
 a lever-shaped plug member configured to seal the liquid injection portion, 
 wherein the plug member includes:
 a first pivoting portion that is configured to pivot the plug member; and 
 a first protrusion provided so as to be displaceable in order to lock the plug member onto the liquid containing body, the first protrusion having a distal end that is oriented towards the first pivoting portion, and 
 
 the liquid containing body includes:
 a second pivoting portion into which the first pivoting portion is to be fit; and 
 a second protrusion configured to come into contact with the first protrusion and displace the first protrusion when the plug member pivots toward the liquid injection portion, the contact with the first protrusion being canceled and the displacement of the first protrusion being returned to normal when the plug member further pivots and is locked onto the liquid containing body. 
 
 
     
     
       12. The liquid supply unit according to  claim 11 , wherein the first protrusion and the second protrusion are arranged at a position at which the liquid injection portion is sealed by the plug member when the plug member pivots and is locked onto the liquid containing body. 
     
     
       13. The liquid supply unit according to  claim 11 , wherein the liquid containing body includes a third protrusion configured to, when the plug member pivots away from the liquid injection portion, restrict the pivoting of the plug member and perform locking by coming into contact with an end portion on the first pivoting portion side of the plug member. 
     
     
       14. The liquid supply unit according to  claim 13 , wherein the end portion is provided with a fourth protrusion configured to come into contact with the third protrusion when locked by the third protrusion. 
     
     
       15. A liquid supply unit configured to supply a liquid to a liquid ejection head of a liquid ejection apparatus, the liquid supply unit comprising:
 a liquid containing body configured to contain the liquid; 
 a liquid injection portion that is provided in the liquid containing body and through which the liquid can be injected into the liquid containing body; and 
 a lever-shaped plug member configured to seal the liquid injection portion, 
 wherein the plug member includes:
 a first pivoting portion that is configured to pivot the plug member; and 
 a first protrusion that is configured to lock the plug member onto the liquid containing body, the first protrusion having a distal end that is oriented towards the first pivoting portion, and 
 
 the liquid containing body includes:
 a second pivoting portion into which the first pivoting portion is to be fit; and 
 a second protrusion that is provided so as to be displaceable, and is configured to come into contact with the first protrusion and be displaced when the plug member pivots toward the liquid injection portion, the contact with the protrusion being canceled and the displacement returning to normal when the plug member further pivots and is locked onto the liquid containing body. 
 
 
     
     
       16. The liquid supply unit according to  claim 15 , wherein the first protrusion and the second protrusion are arranged at a position at which the liquid injection portion is sealed by the plug member when the plug member pivots and is locked onto the liquid containing body. 
     
     
       17. The liquid supply unit according to  claim 15 , wherein the liquid containing body includes a third protrusion configured to, when the plug member pivots away from the liquid injection portion, restrict the pivoting of the plug member and perform locking by coming into contact with an end portion on the first pivoting portion side of the plug member. 
     
     
       18. The liquid supply unit according to  claim 17 , wherein the end portion is provided with a fourth protrusion configured to come into contact with the third protrusion when locked by the third protrusion. 
     
     
       19. A liquid ejection apparatus, comprising:
 a liquid ejection head; and 
 the liquid supply unit according to  claim 1 . 
 
     
     
       20. The liquid supply unit according to  claim 1 , wherein the second protrusion of the housing has a distal end that is oriented away from the first pivoting portion.